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Nowadays, cloud has become a promising multimedia data processing and sharing platform. Many institutes and companies plan to outsource and share their large-scale video and image datasets on cloud for scientific research and public interest. Among various video applications, the discovery of frequent visual patterns over graphical data is an exploratory and important technique. However, the privacy...
As cloud computing becomes prevalent, electronic health record (EHR) system has appeared in the form of patient centric, in which more and more sensitive information from patients is being uploaded into the cloud. To protect patients’ privacy, sensitive EHR information has to be encrypted before outsourcing. However, this makes effective data utilization, such as fuzzy keyword search and data sharing,...
Anonymous password authentication reinforces password authentication with the protection of user privacy. Considering the increasing concern of individual privacy nowadays, anonymous password authentication represents a promising privacy-preserving authentication primitive. However, anonymous password authentication in the standard setting has several inherent weaknesses, making its practicality questionable...
Nowadays, users are increasingly concerned about individual privacy in cyberspace and Internet. In this paper, we propose the concept of private handshakes with optional accountability, which allows the two users in handshaking to decide real time whether or not to make their interactions accountable. Such optionally accountable private handshaking protocols are a more flexible privacy-preserving...
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